com

I'm working with third-party COM object that has some of its methods passing values back as BSTR pointer. Since VBscript supports only Variant type attempts to use in a way like Object.Method(sMyString) reasonably end with "Type mismatch" error. I suspect this error is generated by the COM object itself rather then VBscript interpreter since the object gets string instead of pointer. I tried to workaround it defining array of strings but it's still the same error. So I was wondering if someone had similar problem and what workarounds were utilized. Just to emphasize. I DO NOT have control over

Suppose my COM object implements two or more COM interfaces: class CMyClass : public IPersistFile, public IPersistStream { }; when implementing QueryInterface() I need to be able to return an IUnknown* pointer. Since both base interfaces are derived from IUnknown I cannot upcast implicitly - such upcast would be umbiguous. To upcast explicitly I need to use either of the two ways: if( iid == __uuidof( IUnknown ) ) { *ppv = static_cast<IPersistFile*>( this ); static_cast<IPersistFile*>( this )->AddRef(); return S_OK; } or if( iid == __uuidof( IUnknown ) ) { *ppv = static_cast<IPersistStream*>(

I am trying to make an app that controls the volume of another process using the Windows 7 Audio API. What I'm looking for is the ISimpleAudioVolume for the session used by the other process. I have tried using the IAudioSessionEnumerator but it will only give me the IAudioSessionControl2 of the session. Using the IAudioSessionControl I have managed to receive notifications when I change the volume through sndvol but not change it myself. I have also tried using GetSimpleAudioVolume() from IAudioSessionManager but it will only give me sessions within the current process. How do you do it? It

I have a COM dll , which is consumed by .NET applications using COM Inter-op. In one of the CoClasses , there is an Interface called IT6TrackData and it has one get property called TrackData From the IDL file: Interface IT6TrackData { [propget, id(1)] HRESULT TrackData([out, retval] SAFEARRAY(BYTE) *pVal); } When the TLB file is viewed for the above IDL file, it shows the property as trackData ( t in lower case) For some reason the Client application were referring to this property as trackData and everything was working fine until now. As part of enhancement the above Interface was upgraded

How can I parse an unmanaged code in TLB (Of unmanaged COM server) in C#? By creating a managed wrapper using tlbimp.exe . Once I wrote a TLB browser in VB. I used a COM component that shipped with VB 6 called TlbInf32.dll (you can still find this component in the web I guess). Best 来源： https://stackoverflow.com/questions/2778862/how-to-read-tlb-type-libraries-of-unmanaged-code-from-c

Is there a way in which I can debug my compiled Matlab components, using native Matlab debugger, like Visual Studio "Attach to process" option, or something like that? I mean EXE stand-alone files, DLLs, COM in-process servers or .NET components. You can't debug them in the sense of being able to step through the MATLAB code line by line, as you can with MATLAB's own debugger prior to compilation. One of the steps that the MATLAB deployment products take is to encrypt the MATLAB code (so you can preserve your IP when distributing the deployed component). The ability to step through the code in

I'm developing a DCOM server in .NET 4 (VS2010, C#). By itself, this is working fine. Now, I also need to develop a .NET client for this DCOM server, but I am unable to add a reference to the TypeLib. Visual Studio will tell me the type library was exported from a .NET assembly and cannot be added as a reference. Answers to this question suggests that I should be able to use TlbImp.exe to generate a wrapper assembly, but it will refuse to do so as well: TlbImp : error TI1029 : Type library 'MyWrapper' was exported from a CLR assembly and cannot be re-imported as a CLR assembly. I understand

In a COM RPC Model, if the Server is running on a separate process, is it possible to know, the Process ID of the client Process communicating with the Server? Use Case I have an Out Process RPC Server which can receive request from one or more client process. Occasionally, the server needs to know the Client Process to write data back to the client address space using Write Process Memory . Also Note, the API Signatures, the way the buffer is getting allocated and the APIs are getting called are beyond my control. 来源： https://stackoverflow.com/questions/18770684/determine-the-process-id-of